Update: Performance notification webhooks

Date: April 30, 2026

Performance alarm notifications ( ALARMS) are now delivered based on seller activity instead of a fixed schedule of daily 6:00 AM PT. Delivery timing may vary. Weekly performance reports REPORT) remain unchanged and continue to be delivered on Mondays at 5:00 AM PT.

What changed

• Performance alarm notifications no longer follow a fixed delivery time
• Notifications are now triggered based on seller activity and may arrive at different times

Why it matters

• Improves timeliness of alerts by delivering them when action is needed
• Reduces delays associated with fixed delivery schedules
• Ensures notifications better reflect real-time shipping activity

Next steps

• Review any workflows that rely on fixed delivery times for performance alarms
• Update integrations to handle event-driven notifications instead of time-based triggers
• Refer to the Performance Webhooks guide and Seller performance alarms for implementation details